ass

(noun) the fleshy part of the human body that you sit on. Synonyms: buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny. Examples: "He deserves a good kick in the butt." "Are you going to sit on your fanny and do nothing?."

(noun) a pompous fool.

(noun) hardy and sure-footed animal smaller and with longer ears than the horse.

(noun) slang for sexual intercourse. Synonyms: fuck, fucking, screw, screwing, nooky, nookie, piece of ass, piece of tail, roll in the hay, shag, shtup.